This is cool enough to make anyone a nerd: the entire history of the world in one chart.
The “Histomap” was made in America in 1931. Its creator was a man named John B. Sparks, and it was printed in Chicago by publisher Rand McNally & Company. It sold for $1.
Click on the image or here for a full-size version.
Source: Business Insider via Slate Magazine’s The Vault Blog
The Histomap is now part of the David Rumsey Historical Map Collection.